Where to find custom created Grease P. Brushes? (2.80)
Thank you for trying Yash, but I can tell you were only guessing. Why? Because both guesses are wrong. And because I found where it really is.






This is how it is really done: 





It's easy to overlook because the icons representing the brushes look the same, and have almost the same name. Although the complete name of the last brush is "Draw Pencil.001" but it would only show in the upper left corner of the image above, where it says "Draw Pencil" now.